Face à face
| Segunda B, Relegation Group 2 | 2018/09/09 16:00 | Real Unión v Leioa | W | 1-2 |
| Segunda B, Relegation Group 2 | 2018/04/07 16:00 | Leioa v Real Unión | D | 0-0 |
| Segunda B, Relegation Group 2 | 2017/11/12 16:00 | Real Unión v Leioa | W | 1-3 |
| Segunda B, Relegation Group 2 | 2017/02/18 15:00 | Leioa v Real Unión | W | 2-0 |
| Segunda B, Relegation Group 2 | 2016/10/02 15:00 | Real Unión v Leioa | L | 2-1 |
| Segunda B, Relegation Group 2 | 2016/05/15 16:00 | Real Unión v Leioa | W | 0-1 |
| Segunda B, Relegation Group 2 | 2016/01/02 17:00 | Leioa v Real Unión | L | 0-2 |
| Segunda B, Relegation Group 2 | 2015/04/02 16:00 | Real Unión v Leioa | L | 1-0 |
Home History
| Segunda B, Relegation Group 2 | 2019/01/20 16:00 | CD Calahorra v Leioa | W | 0-1 |
| Segunda B, Relegation Group 2 | 2019/01/12 16:00 | Leioa v Sporting Gijon B | W | 2-0 |
| Segunda B, Relegation Group 2 | 2019/01/05 16:00 | Leioa v UP Langreo | W | 2-1 |
| Segunda B, Relegation Group 2 | 2018/12/22 17:00 | Barakaldo v Leioa | D | 0-0 |
| Segunda B, Relegation Group 2 | 2018/12/15 15:00 | Leioa v Cultural de Durango | D | 0-0 |
| Segunda B, Relegation Group 2 | 2018/12/09 16:00 | Racing Santander v Leioa | L | 2-0 |
| Segunda B, Relegation Group 2 | 2018/12/01 16:00 | Leioa v Izarra | D | 2-2 |
| Segunda B, Relegation Group 2 | 2018/11/24 17:00 | Arenas Club de Getxo v Leioa | D | 1-1 |
Away History
| Copa Federacion | 2019/01/23 18:30 | Real Unión v Pena Sport | W | 4-0 |
| Segunda B, Relegation Group 2 | 2019/01/19 15:00 | Real Unión v Amorebieta | D | 1-1 |
| Segunda B, Relegation Group 2 | 2019/01/13 16:00 | Gimnastica de Torrelavega v Real Unión | D | 1-1 |
| Copa Federacion | 2019/01/09 18:30 | Pena Sport v Real Unión | D | 3-3 |
| Segunda B, Relegation Group 2 | 2019/01/05 11:30 | Tudelano v Real Unión | D | 2-2 |
| Segunda B, Relegation Group 2 | 2018/12/22 15:30 | Real Unión v Athletic Bilbao B | W | 1-0 |
| Segunda B, Relegation Group 2 | 2018/12/16 16:00 | CD Vitoria v Real Unión | L | 2-1 |
| Segunda B, Relegation Group 2 | 2018/12/08 15:30 | CD Calahorra v Real Unión | D | 1-1 |